diff --git a/src/main/java/net/onrc/onos/util/GraphDBConnection.java b/src/main/java/net/onrc/onos/util/GraphDBConnection.java
index 7c1ea2a..a2a8689 100644
--- a/src/main/java/net/onrc/onos/util/GraphDBConnection.java
+++ b/src/main/java/net/onrc/onos/util/GraphDBConnection.java
@@ -24,7 +24,7 @@
 	   
 	   /* Static 'instance' method */
 	   public static GraphDBConnection getInstance(String conf) {
-		   if (graph == null||graph.isOpen()) {
+		   if (graph == null||graph.isOpen() == Boolean.FALSE) {
 		        graph = TitanFactory.open(conf);		        
 		        // FIXME: Creation on Indexes should be done only once
 		        Set<String> s = graph.getIndexedKeys(Vertex.class);
diff --git a/src/main/java/net/onrc/onos/util/GraphDBUtils.java b/src/main/java/net/onrc/onos/util/GraphDBUtils.java
index 8bb83ea..d01de21 100644
--- a/src/main/java/net/onrc/onos/util/GraphDBUtils.java
+++ b/src/main/java/net/onrc/onos/util/GraphDBUtils.java
@@ -1,7 +1,6 @@
 package net.onrc.onos.util;
 
 import com.thinkaurelius.titan.core.TitanGraph;
-import com.thinkaurelius.titan.graphdb.transaction.VertexIterable;
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.frames.FramedGraph;
 import com.tinkerpop.frames.FramedVertexIterable;
@@ -10,7 +9,6 @@
 import net.floodlightcontroller.core.INetMapTopologyObjects.IDeviceObject;
 import net.floodlightcontroller.core.INetMapTopologyObjects.IPortObject;
 import net.floodlightcontroller.core.INetMapTopologyObjects.ISwitchObject;
-import net.floodlightcontroller.routing.Link;
 
 public class GraphDBUtils implements IDBUtils {
 
@@ -56,4 +54,10 @@
 		fg.removeVertex(dev.asVertex());		
 	}
 
+	@Override
+	public Iterable<IDeviceObject> getDevices(GraphDBConnection conn) {
+		FramedGraph<TitanGraph> fg = conn.getFramedGraph();	
+		return fg.getVertices("type","device",IDeviceObject.class);
+	}
+
 }
diff --git a/src/main/java/net/onrc/onos/util/IDBUtils.java b/src/main/java/net/onrc/onos/util/IDBUtils.java
index 52dbc70..a27a261 100644
--- a/src/main/java/net/onrc/onos/util/IDBUtils.java
+++ b/src/main/java/net/onrc/onos/util/IDBUtils.java
@@ -10,4 +10,5 @@
 	public IDeviceObject newDevice(GraphDBConnection conn);
 	public void removeDevice(GraphDBConnection conn, IDeviceObject dev);
 	public IPortObject searchPort(GraphDBConnection conn, String dpid, short number);
+	public Iterable<IDeviceObject> getDevices(GraphDBConnection conn);
 }